/* HeadphonePicks - CSS Framework */

/* CSS Variables */
:root {
  /* Colors */
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-secondary: #7c3aed;
  --color-accent: #f59e0b;
  --color-success: #10b981;
  --color-danger: #ef4444;

  /* Neutrals */
  --color-white: #ffffff;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;

  /* Category Colors */
  --color-gaming: #ef4444;
  --color-commute: #3b82f6;
  --color-studio: #8b5cf6;
  --color-workout: #10b981;

  /* Price Tier Colors */
  --color-budget: #10b981;
  --color-midrange: #f59e0b;
  --color-premium: #8b5cf6;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-heading: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;

  /* Layout */
  --max-width: 1200px;
  --header-height: 70px;
}

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-gray-800);
  background-color: var(--color-white);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-gray-900);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: var(--spacing-md);
}

/* Layout */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

main {
  flex: 1;
}

/* Header */
.header {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-gray-900);
}

.logo:hover {
  color: var(--color-gray-900);
}

.logo-icon {
  font-size: 1.75rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-link {
  font-weight: 500;
  color: var(--color-gray-600);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-gray-900);
  background: var(--color-gray-100);
}

.nav-link.active {
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.1);
}

/* Mobile Navigation */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-gray-700);
  padding: var(--spacing-sm);
}

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-200);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
  }

  .nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-link {
    width: 100%;
    text-align: center;
    padding: var(--spacing-md);
  }

  .mobile-menu-btn {
    display: block;
  }
}

/* Footer */
.footer {
  background: var(--color-gray-900);
  color: var(--color-gray-300);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-brand {
  max-width: 300px;
}

.footer-brand .logo {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--color-gray-400);
}

.footer-section h4 {
  color: var(--color-white);
  font-size: 1rem;
  margin-bottom: var(--spacing-md);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-links a {
  color: var(--color-gray-400);
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: var(--color-white);
}

.footer-bottom {
  border-top: 1px solid var(--color-gray-700);
  padding-top: var(--spacing-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--color-gray-500);
}

.footer-bottom a {
  color: var(--color-gray-400);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--color-gray-900) 0%, var(--color-gray-800) 100%);
  color: var(--color-white);
  padding: var(--spacing-3xl) 0;
  text-align: center;
}

.hero h1 {
  color: var(--color-white);
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
}

.hero p {
  font-size: 1.25rem;
  color: var(--color-gray-300);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: var(--color-white);
}

.btn-secondary {
  background: var(--color-gray-100);
  color: var(--color-gray-700);
}

.btn-secondary:hover {
  background: var(--color-gray-200);
}

.btn-amazon {
  background: #ff9900;
  color: #111;
}

.btn-amazon:hover {
  background: #e88a00;
  color: #111;
}

.btn-sm {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.875rem;
}

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: 1.125rem;
}

/* Cards */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: var(--color-gray-100);
}

.card-body {
  padding: var(--spacing-lg);
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.card-text {
  color: var(--color-gray-600);
  font-size: 0.9rem;
  margin-bottom: var(--spacing-md);
}

/* Product Cards */
.product-card {
  display: flex;
  flex-direction: column;
}

.product-card .card-img {
  height: 180px;
}

.product-price {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-sm);
}

.product-specs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.spec-tag {
  background: var(--color-gray-100);
  color: var(--color-gray-600);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
}

/* Category Cards */
.category-card {
  position: relative;
  min-height: 250px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--spacing-xl);
  text-decoration: none;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.2) 100%);
  z-index: 1;
}

.category-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.category-card-content {
  position: relative;
  z-index: 2;
  color: var(--color-white);
}

.category-card h3 {
  color: var(--color-white);
  margin-bottom: var(--spacing-xs);
}

.category-card p {
  color: var(--color-gray-300);
  font-size: 0.9rem;
  margin-bottom: 0;
}

.category-card:hover {
  color: var(--color-white);
}

/* Category Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-gaming {
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-gaming);
}

.badge-commute {
  background: rgba(59, 130, 246, 0.1);
  color: var(--color-commute);
}

.badge-studio {
  background: rgba(139, 92, 246, 0.1);
  color: var(--color-studio);
}

.badge-workout {
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-workout);
}

/* Price Tier Badges */
.badge-budget {
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-budget);
}

.badge-midrange {
  background: rgba(245, 158, 11, 0.1);
  color: var(--color-midrange);
}

.badge-premium {
  background: rgba(139, 92, 246, 0.1);
  color: var(--color-premium);
}

/* Grid Layouts */
.grid {
  display: grid;
  gap: var(--spacing-xl);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 992px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .grid-4, .grid-3, .grid-2 {
    grid-template-columns: 1fr;
  }
}

/* Sections */
.section {
  padding: var(--spacing-3xl) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-title h2 {
  margin-bottom: var(--spacing-sm);
}

.section-title p {
  color: var(--color-gray-600);
  max-width: 600px;
  margin: 0 auto;
}

.section-alt {
  background: var(--color-gray-50);
}

/* Comparison Table */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.comparison-table th,
.comparison-table td {
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: left;
  border-bottom: 1px solid var(--color-gray-200);
}

.comparison-table th {
  background: var(--color-gray-100);
  font-weight: 600;
  color: var(--color-gray-700);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table tr:hover td {
  background: var(--color-gray-50);
}

@media (max-width: 768px) {
  .comparison-table {
    display: block;
    overflow-x: auto;
  }

  .comparison-table th,
  .comparison-table td {
    padding: var(--spacing-sm) var(--spacing-md);
    min-width: 120px;
  }
}

/* Specs List */
.specs-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.spec-item {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-md);
  background: var(--color-gray-50);
  border-radius: var(--radius-md);
}

.spec-label {
  color: var(--color-gray-600);
  font-size: 0.9rem;
}

.spec-value {
  font-weight: 600;
  color: var(--color-gray-900);
}

@media (max-width: 576px) {
  .specs-list {
    grid-template-columns: 1fr;
  }
}

/* Rating Stars */
.rating {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.rating-star {
  color: var(--color-accent);
}

.rating-star.empty {
  color: var(--color-gray-300);
}

.rating-value {
  margin-left: var(--spacing-sm);
  font-weight: 600;
  color: var(--color-gray-700);
}

/* Pros and Cons */
.pros-cons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}

.pros, .cons {
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
}

.pros {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.cons {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.pros h4, .cons h4 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.pros h4 {
  color: var(--color-success);
}

.cons h4 {
  color: var(--color-danger);
}

.pros ul li, .cons ul li {
  padding: var(--spacing-sm) 0;
  padding-left: var(--spacing-lg);
  position: relative;
}

.pros ul li::before {
  content: '+';
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: bold;
}

.cons ul li::before {
  content: '-';
  position: absolute;
  left: 0;
  color: var(--color-danger);
  font-weight: bold;
}

@media (max-width: 576px) {
  .pros-cons {
    grid-template-columns: 1fr;
  }
}

/* Product Detail Page */
.product-hero {
  background: var(--color-gray-50);
  padding: var(--spacing-2xl) 0;
}

.product-hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.product-hero-image {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
}

.product-hero-image img {
  width: 100%;
  height: auto;
  max-height: 400px;
  object-fit: contain;
}

.product-hero-info h1 {
  margin-bottom: var(--spacing-md);
}

.product-hero-badges {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.product-hero-price {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-lg);
}

.product-hero-desc {
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-xl);
}

@media (max-width: 768px) {
  .product-hero-content {
    grid-template-columns: 1fr;
  }
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) 0;
  font-size: 0.9rem;
  color: var(--color-gray-500);
}

.breadcrumb a {
  color: var(--color-gray-500);
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

.breadcrumb-separator {
  color: var(--color-gray-400);
}

/* Affiliate Disclosure */
.affiliate-disclosure {
  background: var(--color-gray-100);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  color: var(--color-gray-600);
  margin-top: var(--spacing-xl);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.py-1 { padding-top: var(--spacing-sm); padding-bottom: var(--spacing-sm); }
.py-2 { padding-top: var(--spacing-md); padding-bottom: var(--spacing-md); }
.py-3 { padding-top: var(--spacing-lg); padding-bottom: var(--spacing-lg); }
.py-4 { padding-top: var(--spacing-xl); padding-bottom: var(--spacing-xl); }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }
.gap-3 { gap: var(--spacing-lg); }